Of warren



Feb; 9 ,1926.

H. T. .GRAFTON Ef AL APPARTUS FOR PURIFYING GAS Filed-March so". 1921 2 sheets-sneef @gli gmuntocs, J W J- I ffuL ld WM,

Feb. 9 1926.

' H. T. GRAFTON ETA AL APPARATUS FOR PURIFYING GAS Filed March 30 1921 2 Sheets-Sheet 2 gnam/Toms Patented F eb. 9, 1926.

lUNITED STATES PATENT: oi-Fica H OWARD TOLANGRAFTON, CARL WILLIAM 'WrinvsN-iia AND IFLOYD JACOB HOFFMAN,

" or WARREN, OHIO!v ArrAnATUs FOR PURIFYiNG GAS'.

.Appiiatiqn filed Mai-ch 30, 192i. semi No. fieeils.

ZroaZZ vwhomi' .may concern: i

. Beit known that .HOWARD T. GRAFTON,

CARL WV. WEES'NER, and FLOYD J Horn-'s MAN, citizens of thef United States, residing at lVarren, in` the 'county of Trumbull and State of Ohio, have invented certain new and useful lImprovements in Apparatus. for Purifying Gras, of Iwhich'the Vfollowing is a specification. ,()ur inventionsV relates to airapparatus for purifying ducei' gas. H

. Raw Vproducer-gas coming from. a producer, vutilizing preferably charcoal fuel, carries certain constituentswhich exert an exceedinglv harmful effect on steel plates when subjected to anf atmosphere. of this gas during the 'annealing' or cooling period..

In order to successfully utilizeproducer gas for the annealing of steel plates and similar articles it is necessary to increase the reducing character of the gas by `d `ecreasing the moisture and lcorloon dioxidlcontents and substantially eliminating the .oxygencontent. '7

The object ofour invention is the provision of an"apparatus-'which will effectively. increase the ,reducingV character of the gas `and attlie same time be Lofy simple construction, capable of operating in an efficient and economical manner. XVe believe the apparatus hereinafter describedand `set forth meets these requirements. Y s

`For complete understand-ing of our inand bottoni a', fire wall 5, and grate 6. The

gas,v more particularly, vpro-` vention, reference is directedto the accomis a sectional view` of the same,

' 1 f i i Y disturbing the a modified .pre1

longitudinally extended i furnace is provided With affire-doiorr? and a Vflue 8. Suspended from the roofl 4s by the. flanges 12 and protruding .therefrom-are.

purilicatiOn-cliamlbers 9@ and 9b vsuitably connected with each other by.nieansof conduits 10 carrying valves 11;.'The purification-chambers may form a single battery as shown in Figures 2 and 4,' or a series as shown in .Figure 8.

Thefeed pipe 13 carries A'the gas to be purified from a suitaloly located storage-'tank 14; to the preheater 15 which isA enclosed in a refractory material' ad apted to be heated, by the furnace-gases7 preferably the ire wall 5. The preheater 15` is integral with the? pipe 16 which is substantially outside of the furnace `wall 2 and leads to the purificationcliainbe`r9b- The purificatioiilcliaiiiloers.` 9 and 9'J have removable top :andbottoin plates 17 and 18, both preferably hinged asat'19. The bottom 1plates are provided with plate-retaining-means 20,; g

`The furnace is `provided with: a tunnel or pit 21 and Ythe purification-chambers only partiallyn extend `into the saine, thereby perinitting access at all times to tlie chambers.v

The purified gas passes from the furnace by means of the conduit 22.

may be in the form of in Figure 5.

The prelieater may be made of any su are preferably formed The construction 4set fortliV `provides a simple Ayet keiiicient apparatus. Tliejpuri- The 1 preheater a U-tube as shown itable `material but and purification-chainbers.v

of Wrought iron-` material and carryja iireproof cement.

cation-chambers which'are always full of a are as above described,

tended, andlpiotrude from the roof oftheV furnace, thereby making thecliainbers ac- ,purification-medium, preferably charcoal,

longitudinally excessible fi'oin the outside `of the furnace, facilitating cleaning and refilling without fire. makes it possible to. have ber-connections outside of the furnace. Asl

This arrangement `most of the chamthe` chambers 9a and '9"v are suspended from the roof'by means of flanges 12, they may be easily removed in cas sary to replace them.

e it becomes necesthe producer-gas vcontaining considerableL.Y quantities of moisture, carbon dioxld and' oxygen is passed from the 4storage,-Ata'nk.l i1-Vl, through conduit 13 to the preheater l5 located in the fire Wall vand Athen through conduit 16 into the longitudinally-extended purification-chambers `9a and 9b, Which are substantially completely filled kWith. a po-- rous purification-medium, preferably charcoal. .-,Any substance vvhich is4 porous and .free from sulfur andL acts as reducing medium may be'used. Carbonaceous" material, and more particularly]'charcoal is preferred. Longitudinally-extended chambers provide 'a largeJ purification-surface and this. is. highly desirable. 'The gas enters chamber. 9b'through :conduit 16- and passes upwardly through the Ychamber filled with the: purification-medium and into the chamber 9a by means of conduit 10. z lhe'gas passes downwardly through. chamber 9a and into conduitQQ.' .The direction vvhich. the

gas takes in its passage through the chami bers is indicated bythe a'rrovs in 'Figure 4.

-We claim:

41. AV furance f for purifying gas havingl a preheater adapted to be heated'by the furnace-gases, ypurification-chambers Y suspended from and entirely supported Aby y-the furnace-roof and means for "delivering-.the gas from the preheater to the purificationchambers. Y 2. .A furnace for purifyinggashaving a preheaterenclosed in a refractory 'material' adapted to be heated-by the furnace-gases, purification-chambers suspended` from and entirely supported by the y.furnace-roof 'and meanswfor'- delivering the ga'sf-rom .the pre-k heater to the purifica-tion;chambers." 3. A.furnace forA purifying gas having la preheater enclosed in a refractory material adapted to, be heatedby the furnace-gases, longitudinally-extending purification-chambers suspended. from and entirely supported by the. furnace-roof and' means` for? delivering the gas from the preheater tol the puriication-chambers.

4. AA...fu'rnacev for purifying gas having a preheaterpenclosed in a refractory material adapted. to be heated by the furnace gases, a series f purification-batteries suspended from and entirely supportedby.thefurnaceroof andmeans yfor delivering gas from the preheater to the lpurification-batteries.

`5.11 furnace for purifying gas having a preheater enclosed in the `lire-Wall adapted t thereby `and means yfor vdelivering to be heated. by the furnace-gases, longitudinally extended purification chambers protruding and suspended from the furnace-` roof and entirely supported thereby and means for delivering gas `from the preheater to ythe.npurilication-chambers.

.6. A furnace for purifying gas having a preheater adaptedk to be heated by the furnace-gases, `flanged,purification-chambers suspended lfrom the 'furnaceroofi'and :entirely supported thereby and means for deliyeringthe, as` from the preheater to the purification-c ambers.

(77.;A. furnace;V for `-purifying gas having a preheater adapted to be heated by the furnace-gases, purification-chambers having removable top and bttoim'plates suspended fromffthe furnace-roof and entirely supported thereby and means 'for-deliveringthe gas-*from -the preheater to the. purification-l chambers.

.8. furnace lfor 4purifying' gas having a U-shaped preheater: enclosed lin a .refractory material adapted to be heated bythe furnace gases, purification-chambers suspended from the furnace-roof and entirely supported thereby and kmeans for deliveringgas from the preh-eater to the purification-chambers.

9. -A` furnace for purifying gas having a preheater enclosed in-.thebridge-'vvall adapted` to `be heated by the furnace-gases, longitudinally-extended purification-chambers protruding and "suspended from Ythe furnace-roof vand* entirelyksupported .thereby and means for ,delivering` gas' from thepreheater to the purification-chambers.

410. A. furnace for purifying gas having a U-shapedpreheater enclosed in :the bridge- Wall adapted to be heatedI by the `furnacel gases, purification-chambers suspended from the lfurnaceroof` andy entirely supported s. l l Uasfrom the, preheater. `to fthe purification-chambers.

. 151. .A furnacefor purifying gas having a preheater "enclosed ina refractory material adapted. to lbe,V heated by the Y furnace gases, purification-chambers suspended from and entirely supported. by the furnace roof Aso asto 'allow kfori-the expansionv of said purification-chambers without inducing stresses inthe furnace roof and means for'deliv'ering thegas from the preheater tothe purification-chambers.

V`12. In a furnace yfor purifying gas, said furnace being provided with a furnace roof, puriication-chambers suspended from and entirely supported by the furnace roof'jfso asto allo'wforthe expansion of lsai'd'purification-chambers without inducing stresses in .thefiuinace roof. i i

13. In a furnacelfor purifying gas, said furnace being provided vWitli'a furnace roof, flanged purification-chambers v suspended from and entirely supported `by theffurnaee roof so4 asto "allou7 for the expansion ofsaid purifcationchambers Without inducing stresses in the furnace roof.

14. In a furnace for purifying gas, said furnace being' provided with a furnace roof, purification-chambers having removable top and bottom plates suspended from and entirelyrsupported by the furnace roof so as to allow for the expansion of said purification-cbambers Without inducing stresses in the furnace roof.

In testimony whereof We hereunto affix our signatures.

HOWARD TOLAN GRAFTON. CARL WM. WEESNER. FLOYD JACOB HOFFMAN. 

